restored and its monuments have been re @ - @ erected . group r is another twin @ - @ pyramid complex , dated to 79 ##0 . it is close to the male ##r causeway . there are thousands of ancient structures at ti ##kal and only a fraction of these have been excavated , after decades of archaeological work . the most prominent surviving buildings include six very large pyramid ##s , labelled temples i - vi , each of which support a temple structure on their summit ##s . some of these pyramid ##s are over 60 metres ( 200 feet ) high . they were numbered sequential ##ly during the early survey of the site . it is estimated that each of these major
restored and its monuments have been re @ - @ erected. group r is another twin @ - @ pyramid complex, dated to 790. it is close to the maler causeway. there are thousands of ancient structures at tikal and only a fraction of these have been excavated, after decades of archaeological work. the most prominent surviving buildings include six very large pyramids, labelled temples i - vi, each of which support a temple structure on their summits. some of these pyramids are over 60 metres ( 200 feet ) high. they were numbered sequentially during the early survey of the site. it is estimated that each of these major